Bike rack



FIG. 1 is a left side elevation view of a bike rack, showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is bottom plan view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a back view thereof;

FIG. 6 is a right side elevation view thereof; and,

FIG. 7 is a perspective view thereof.

The broken lines shown in all views of the drawing are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a bike rack, as shown and described. 